The Fitzdermots later gave their names to the placenames Dolphin's Barn and Ballyfermot.[3] The influence of the family helped secure place-myths for prominent Kildare landmarks in the heroic and romantic literature such as the Dindeanchas, Dinnshenchas Érenn as one of the “assemblies and noted places in Ireland”. After the death of the last Kildare-based King of Laighin, Murchad Mac Dunlainge in 1042, the Kingship of Leinster reverted to the Uí Cheinnselaig kindred based in the south east.